15ct Spinel (Heart, 15.99×15.99mm, Red) vs 15ct Andesine (Heart, 17.66×17.66mm, Orange)
Quick summary: When looked from above (face-up position), 15ct Andesine (17.66×17.66mm, heart cut) appears 22% larger than 15ct Spinel (15.99×15.99mm, heart cut). See below how they compare side-by-side on a ring and finger.
| 15ct Spinel (heart cut) |
vs
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15ct Andesine (heart cut) |
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red |
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| 15.99×15.99 mm | 17.66×17.66 mm | |
| actual size | ||
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Actual size is set for screen
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Ring:
Skin tone:
Ring width: 3.0 mm
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64 mm |
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Actual sizes of
15ct Spinel Heart (15.99×15.99mm, Red)
and
15ct Andesine Heart (17.66×17.66mm, Orange)
as they would appear on a ring and finger.
Adjust the ring and finger size to get an idea of how these gemstones would look on your finger.
Where to buy?
For certified gemstones, high-end gemstone jewelry, and birthstone jewelry, see Blue Nile
Face-up Size
All things being equal, Spinel will face-up smaller than Andesine for a given
carat weight, because it has higher specific gravity
(3.6 vs. 2.67 - this means it's "heavier" compared to Andesine of the same size). Face-up size also depends heavily on the proportions of the cut.
Face-up area is a measure of the size of the gem when viewed from above (as set in a ring). It tells you how big the gem is at the girdle plane.
Face-up area is a measure of the size of the gem when viewed from above (as set in a ring). It tells you how big the gem is at the girdle plane.
| 15 Ct Spinel (Heart) | 15 Ct Andesine (Heart) | |
| 15.99×15.99 mm | vs | 17.66×17.66 mm |
| 184.09 mm² | 224.55 mm² |
| 15ct Spinel Heart (15.99×15.99mm) | |
| 15ct Andesine Heart (17.66×17.66mm) | |
| Difference: 22% (40.46 mm²) |
15ct Andesine (Heart, 17.66×17.66mm) has approx. 22% more face-up area than 15ct Spinel (Heart, 15.99×15.99mm).
Popular comparisons:
- 2.7ct Ruby (Pear, Red, 10 x 7) vs. 3ct Ruby (Emerald, Red, 9 x 7)
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- 1ct Aquamarine (Oval, Light Blue, 8 x 6) vs. 1ct Spinel (Oval, Gray, 8 x 6)
- 1.16ct Diamond (Round, White, 6.82 x 6.85) vs. 1.2ct Diamond (Round, White, 6.82 x 6.86)
- 6ct Morganite (Cushion, Light Red, 12 x 10) vs. 3.5ct Sapphire (Cushion, Blue, 8.49 x 8.49)
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- 1ct Sapphire (Baguette, Blue, 6.93 x 4.62) vs. 1ct Emerald (Emerald, Green, 7.28 x 5.39)
- 1ct Topaz (Round, Blue, 6 x 6) vs. 0.5ct Topaz (Round, Blue, 5 x 5)